Tag: Liver
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Secondhand Thiocyanate (SCN⁻)
Secondhand tobacco smoke does contain hydrogen cyanide (HCN), which the body metabolizes into thiocyanate (SCN⁻). Studies show that nonsmokers exposed to tobacco smoke — especially in enclosed environments — can exhibit elevated SCN⁻ levels in saliva, though not as high as active smokers. 🧬 How the Transfer Works 🌀 Glyphic Implication: The Passive Spiral Imagine…
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Chalone Rangers: The Tissue-Specific Mitotic Inhibitors You Never Knew You Needed
Chalones are the unsung heroes of cellular crowd control. These tissue-specific, water-soluble substances are like the bouncers of your body, standing at the gates of mitosis with their arms crossed, saying, “Not tonight, buddy.” They’re the biochemical equivalent of that one friend who knows when to call it a night before things get out of…
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HFE H63D & VO2 max
SMOKE EM IF YOU GOT EM The HFE H63D is a single-nucleotide polymorphism in the HFE gene (c.187C>G, rs1799945), which results in the substitution of a histidine for an aspartic acid at amino acid position 63 of the HFE protein (p.His63Asp). HFE participates in the regulation of iron absorption. Homozygous H63D variant can occasionally be the cause of hemochromatosis. It is also…
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Methaemalbumin in Man (1939)
(Pseudo-methaemoglobin) Section of Therapeutics and Pharmacology and a list of related articles
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Steroidogenic factor 1 (SF-1) protein and a few related things
The steroidogenic factor 1 (SF-1) protein is a transcription factor involved in sex determination by controlling the activity of genes related to the reproductive glands or gonads and adrenal glands. This protein is encoded by the NR5A1 gene, a member of the nuclear receptor subfamily, located on the long arm of chromosome 9 at position 33.3. It was originally identified as a regulator of genes encoding cytochrome P450 steroid hydroxylases, however, further roles…
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Serum albumin aka blood albumin
Serum albumin, often referred to simply as blood albumin, is an albumin (a type of globular protein) found in vertebrate blood. Human serum albumin is encoded by the ALB gene. Other mammalian forms, such as bovine serum albumin, are chemically similar. Serum albumin is produced by the liver, occurs dissolved in blood plasma and is the most abundant blood protein in mammals. Albumin is essential for maintaining the oncotic pressure needed for proper distribution of body fluids between…
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Clusterin (apolipoprotein J)
Clusterin (apolipoprotein J) is a 75-80 kDa disulfide-linked heterodimeric protein associated with the clearance of cellular debris and apoptosis. In humans, clusterin is encoded by the CLU gene on chromosome 8. CLU is a molecular chaperone responsible for aiding protein folding of secreted proteins, and its three isoforms have been differentially implicated in pro- or antiapoptotic processes. Through this function, CLU is involved in many diseases related to oxidative stress, including neurodegenerative diseases, cancers, inflammatory diseases, and aging. Structure The CLU gene contains…
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A complement receptor is a membrane-bound receptor belonging to the complement system, which is part of the innate immune system
Complement receptors bind effector protein fragments that are produced in response to antigen-antibody complexes or damage-associated molecules. Complement receptor activation contributes to the regulation of inflammation, leukocyte extravasation, and phagocytosis; it also contributes to the adaptive immune response. Different complement receptors can participate in either the classical complement pathway, the alternative complement pathway, or both. Expression and function White blood cells, particularly monocytes and macrophages, express complement receptors on their surface.…
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Complement receptor type 1 (CR1)
Complement receptor type 1 (CR1) also known as C3b/C4b receptor or CD35 (cluster of differentiation 35) is a protein that in humans is encoded by the CR1 gene. This gene is a member of the regulators of complement activation (RCA) family and is located in the ‘cluster RCA’ region of chromosome 1. The gene encodes a monomeric single-pass type I membrane glycoprotein found on erythrocytes, leukocytes, glomerular podocytes, hyalocytes, and splenic follicular dendritic…
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Humans have been interested in echinoid fossils (the fossilised remains of sea urchins) for millennia, considering them lucky and imbuing them with magical powers linked to their deities
A folk tradition in Denmark and southern England imagined sea urchin fossils to be thunderbolts, able to ward off harm by lightning or by witchcraft, as an apotropaic symbol. Another version supposed they were petrified eggs of snakes, able to protect against heart and liver disease, poisons, and injury in battle, and accordingly they were carried as amulets. These were,…
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Nuclear factor erythroid 2-related factor 2 (NRF2)
Glutathione Local Links Nuclear factor erythroid 2-related factor 1 Local Links Reference for subtitle: Finamor IA, Bressan CA, Torres-Cuevas I, Rius-Pérez S, da Veiga M, Rocha MI, Pavanato MA, Pérez S. Long-Term Aspartame Administration Leads to Fibrosis, Inflammasome Activation, and Gluconeogenesis Impairment in the Liver of Mice. Biology. 2021; 10(2):82. https://doi.org/10.3390/biology10020082 Nuclear factor erythroid 2-related…
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Aniline, through its conversion into antiandrogenic paracetamol (acetaminophen, tylenol), impairs male reproductive development
Industrial use of aniline is increasing worldwide with production estimated to surpass 5.6 million metric tons in 2016. Exposure to aniline occurs via air, diet, and water augmenting the risk of exposing a large number of individuals. Early observations suggest that aniline is metabolized to paracetamol/acetaminophen, likely explaining the omnipresence of low concentrations of paracetamol…
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Although RES is commonly associated exclusively with macrophages, recent research has revealed that the cells that accumulate intravenously administered vital stain belong to a highly specialised group of cells called scavenger endothelial cells (SECs), that are not macrophages
In anatomy the term “reticuloendothelial system” (abbreviated RES), often associated nowadays with the mononuclear phagocyte system (MPS), was originally launched by the beginning of the 20th century to denote a system of specialised cells that effectively clear colloidal vital stains (so called because they stain living cells) from the blood circulation. The term is still used today, but its meaning has changed…
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Liver sinusoidal endothelial cells (LSECs) AKA the hepatic sinusoids
They form the lining of the smallest blood vessels in the liver
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The conjugate (10S,11S) JH diol phosphate is the product of a two-step enzymatic process: conversion of JH to JH diol and then addition of a phosphate group to C10
The conjugate (10S,11S) JH diol phosphate is the product of a two-step enzymatic process: conversion of JH to JH diol and then addition of a phosphate group to C10. The enzyme responsible for the phosphorylation of JH diol is JH diol kinase (JHDK), which was first characterized from the Malpighian tubules of early fifth instars of M. sexta. The Malpighian tubule system is a type of excretory and osmoregulatory system found in…
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The Yolk’s On Us: Unraveling the Secrets of Vitellogenesis
Hold onto your ovaries, folks! We’re about to dive into the wild world of Vitellogenesis – the cellular rave where eggs get their groove on! Picture this: You’re a lonely liver cell, minding your own business, when suddenly – BAM! – you’re hit with a tsunami of estradiol. It’s like Mother Nature’s Red Bull, and…
